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|
--
-- vt_text.sql
--
-- $Id$
--
-- Text triggers support.
--
-- This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
-- project.
--
-- Copyright (C) 1998-2012 OpenLink Software
--
-- This project is free software; you can redistribute it and/or modify it
-- under the terms of the GNU General Public License as published by the
-- Free Software Foundation; only version 2 of the License, dated June 1991.
--
-- This program is distributed in the hope that it will be useful, but
-- WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-- General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along
-- with this program; if not, write to the Free Software Foundation, Inc.,
-- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
--
--
create procedure DB.DBA.execstmt (in stmt varchar, out stat varchar, out msg varchar)
{
stat := '00000';
exec (stmt, stat, msg, vector (), 0, null, null);
if (stat <> '00000')
{
return 1;
}
return 0;
}
;
create procedure DB.DBA.vt_create_ftt (in tb varchar, in id varchar, in dbcol varchar, in is_intr integer)
{
declare stmt, stat, msg, verr varchar;
declare tbn0, tbn1, tbn2, data_table_suffix, theuser varchar;
-- tb := complete_table_name (fix_identifier_case (tb), 1);
verr := '';
tb := complete_table_name ((tb), 1);
tbn0 := name_part (tb, 0);
tbn1 := name_part (tb, 1);
tbn2 := name_part (tb, 2);
data_table_suffix := concat (tbn0, '_', tbn1, '_', tbn2);
data_table_suffix := DB.DBA.SYS_ALFANUM_NAME (replace (data_table_suffix, ' ', '_'));
theuser := user;
if (theuser = 'dba') theuser := 'DBA';
if (not exists (select 1 from DB.DBA.SYS_VT_INDEX where 0 = casemode_strcmp (VI_TABLE, tb)))
{
verr := 'FT035';
stat := '42S02';
msg := sprintf ('Text index should be enabled for the table "%s"', tb);
goto err;
}
if (not isstring (id))
select VI_ID_COL into id from DB.DBA.SYS_VT_INDEX where 0 = casemode_strcmp (VI_TABLE, tb);
if (not isstring (dbcol))
select VI_COL into dbcol from DB.DBA.SYS_VT_INDEX where 0 = casemode_strcmp (VI_TABLE, tb);
if (not exists (select 1 from DB.DBA.SYS_COLS where "TABLE" = tb and "COLUMN" = id))
{
stat := '42S22';
verr := 'FT036';
msg := sprintf ('The id column "%s" does not exist in table "%s" definition', id, tb);
goto err;
}
if (not exists (select 1 from DB.DBA.SYS_COLS where "TABLE" = tb and "COLUMN" = dbcol))
{
stat := '42S22';
verr := 'FT037';
msg := sprintf ('The data column "%s" does not exist in table "%s" definition', dbcol, tb);
goto err;
}
-- prevent making of error messages if creation is internal
if (is_intr = 2 and exists (select 1 from DB.DBA.SYS_KEYS
where KEY_TABLE = sprintf ('%s.%s.%s_%s_QUERY', tbn0, tbn1, tbn2, dbcol)))
return;
-- Upgrade an old database
if (not exists
(select 1 from DB.DBA.SYS_PROCEDURES where P_NAME = sprintf ('%I.%I.VT_HITS_%I', tbn0, tbn1, tbn2)))
{
stmt := concat (
sprintf (
'create procedure "%I"."%I"."VT_BATCH_PROCESS_%s" (inout vtb any, in doc_id int) {\n',tbn0, tbn1, data_table_suffix),
'declare invd any;\n
invd := vt_batch_strings_array (vtb);\n
if (length (invd) < 1) return;\n',
sprintf ('"%I"."%I"."VT_HITS_%I" (vtb, invd);\n', tbn0, tbn1, tbn2),
sprintf (
'log_text (''"%I"."%I"."VT_BATCH_REAL_PROCESS_%s" (?, ?)'', invd, doc_id);\n', tbn0, tbn1, data_table_suffix),
'log_enable (0);\n',
sprintf (
'"%I"."%I"."VT_BATCH_REAL_PROCESS_%s" (invd, doc_id);\n',tbn0, tbn1, data_table_suffix),
'log_enable (1);}\n');
DB.DBA.execstr (stmt);
}
-- Tables definition
stmt := sprintf ('CREATE TABLE "%I"."%I"."%I"
(TT_WORD VARCHAR, TT_ID INTEGER, TT_QUERY VARCHAR, TT_CD VARCHAR,
TT_COMMENT VARCHAR, TT_XPATH VARCHAR, TT_PREDICATE VARCHAR,
PRIMARY KEY (TT_WORD, TT_ID))',
tbn0, tbn1, concat (tbn2, '_', dbcol, '_QUERY'));
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
stmt := sprintf ('CREATE TABLE "%I"."%I"."%I"
(TTU_T_ID INTEGER, TTU_U_ID INTEGER, TTU_NOTIFY VARCHAR, TTU_COMMENT VARCHAR,
PRIMARY KEY (TTU_T_ID, TTU_U_ID))',
tbn0, tbn1, concat (tbn2, '_', dbcol, '_USER'));
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
stmt := sprintf ('CREATE TABLE "%I"."%I"."%I"
(TTH_U_ID INTEGER, TTH_D_ID any, TTH_T_ID INTEGER, TTH_TITLE VARCHAR,
TTH_URL VARCHAR, TTH_TS TIMESTAMP, TTH_NOTIFY VARCHAR,
PRIMARY KEY (TTH_U_ID, TTH_TS, TTH_D_ID, TTH_T_ID))',
tbn0, tbn1, concat (tbn2, '_', dbcol, '_HIT'));
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
-- Trigger definition
stmt := sprintf ('CREATE TRIGGER "%I_FTT_D" AFTER DELETE ON "%I"."%I"."%I" ORDER 3 %s
DELETE FROM "%I"."%I"."%I_%I_HIT" WHERE TTH_D_ID = "%I"; %s',
tbn2, tbn0, tbn1, tbn2, '{', tbn0, tbn1, tbn2, dbcol, id, '}');
-- Procedures definition
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
stmt := concat ( sprintf ('create procedure "%I"."%I"."VT_HITS_%I"', tbn0, tbn1, tbn2), '(inout vtb any, inout strs any)
{
declare tried, hits, doc_id, u_id integer;
declare len, inx int;
inx := 0;len := length (strs);tried := 0;',
sprintf ('if (registry_get (''tt_%s_%s_%s'') = ''OFF'') return;', tbn0, tbn1, tbn2),
'while (inx < len)
{
for select TT_ID, TT_QUERY, TT_COMMENT, TT_CD, TT_XPATH from ',
sprintf ('"%I"."%I"."%I"', tbn0, tbn1, concat(tbn2, '_', dbcol, '_QUERY')), '
where TT_WORD = aref (strs, inx) do
{
declare ids, ntf, xp any;
tried := tried + 1;
declare ii, is_xp int;
is_xp := 0;
if (TT_XPATH is not null and TT_XPATH <> '''')
{
xp := deserialize (TT_QUERY);
ids := vt_batch_match (vtb, xp);
is_xp := 1;
}
else
ids := vt_batch_match (vtb, TT_QUERY);
hits := hits + length (ids);
ii := 0;',
sprintf ('select TTU_NOTIFY, TTU_U_ID into ntf, u_id from "%I"."%I"."%I_%I_USER" where TTU_T_ID = TT_ID;', tbn0, tbn1, tbn2, dbcol),
'while (ii < length (ids))
{
doc_id := aref (ids, ii);
if (<INSERT_COND>)
{
', sprintf ('if ((is_xp = 0)
or (is_xp = 1 and exists (select 1 from "%I"."%I"."%I"
where "%I" = doc_id and xpath_contains ("%I", TT_XPATH))))',
tbn0, tbn1, tbn2, id, dbcol),
sprintf ('insert soft "%I"."%I"."%I" (TTH_U_ID, TTH_T_ID, TTH_D_ID, TTH_NOTIFY)
select TTU_U_ID, TT_ID, doc_id, ntf from "%I"."%I"."%I" where TTU_T_ID = TT_ID;
}
ii := ii + 1;
}
}
inx := inx + 2;
}
--dbg_obj_print ('' batch '', length (strs) / 2, ''distinct tried '', tried, '' hits '', hits);
}', tbn0, tbn1, concat (tbn2, '_', dbcol, '_HIT'),
tbn0, tbn1, concat (tbn2, '_', dbcol, '_USER')));
-- for WebDAV resources display only if user have read access
if (0 <> casemode_strcmp (tb, 'WS.WS.SYS_DAV_RES'))
stmt := replace (stmt, '<INSERT_COND>', '1 = 1');
else
stmt := replace (stmt, '<INSERT_COND>', 'WS.WS.CHECK_READ_ACCESS (u_id, doc_id)');
-- dbg_obj_print (stmt);
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
stmt := sprintf (' create procedure "%I"."%I"."TT_WORD_FREQ_%I" (in w varchar)
{
declare l1, l2 integer;
l1 := 0; l2 := 0;
whenever not found goto none;
select sum (length (VT_DATA)),
sum (length (VT_LONG_DATA)) into l1, l2 from "%I"."%I"."%I_%I_WORDS"
where VT_WORD = w;
none:
return (coalesce (l1, 0) + coalesce (l2, 0));
}', tbn0, tbn1, tbn2, tbn0, tbn1, tbn2, dbcol);
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
stmt := sprintf ('create procedure "%I"."%I"."TT_QUERY_%I" (in exp varchar, in u_id int, in comment varchar,
in notify varchar, in user_data varchar := null, in predicate varchar := null)
{
declare t_id, ix, len integer;
declare w any;
t_id := coalesce ((select top 1 TT_ID + 1 from "%I"."%I"."%I_%I_QUERY"
order by TT_ID desc), 1);
w := "%I"."%I"."TT_QUERY_WORD_%I" (exp, 0);
len := length (w); ix := 0;
while (ix < len) {
insert into "%I"."%I"."%I_%I_QUERY" (TT_ID, TT_QUERY, TT_WORD, TT_COMMENT, TT_CD, TT_PREDICATE)
values (t_id, exp, aref (w, ix), comment, user_data, predicate);
ix := ix + 1;
}
insert soft "%I"."%I"."%I_%I_USER" (TTU_T_ID, TTU_U_ID, TTU_NOTIFY, TTU_COMMENT)
values (t_id, u_id, notify, comment);
}', tbn0, tbn1, tbn2,
tbn0, tbn1, tbn2, dbcol,
tbn0, tbn1, tbn2,
tbn0, tbn1, tbn2, dbcol,
tbn0, tbn1, tbn2, dbcol);
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
-- XPATH search
stmt := sprintf ('create procedure "%I"."%I"."TT_XPATH_QUERY_%I" (in exp varchar, in u_id int, in comment varchar,
in notify varchar, in user_data varchar := null, in predicate varchar := null)
{
declare t_id, ix, len integer;
declare w any;
declare xp any;
xp := xpath_text (exp);
t_id := coalesce ((select top 1 TT_ID + 1 from "%I"."%I"."%I_%I_QUERY"
order by TT_ID desc), 1);
w := "%I"."%I"."TT_QUERY_WORD_%I" (xp, 1);
len := length (w); ix := 0;
while (ix < len) {
insert into "%I"."%I"."%I_%I_QUERY" (TT_ID, TT_QUERY, TT_WORD, TT_COMMENT, TT_XPATH, TT_CD, TT_PREDICATE)
values (t_id, serialize (xp), aref (w, ix), comment, exp, user_data, predicate);
ix := ix + 1;
}
insert soft "%I"."%I"."%I_%I_USER" (TTU_T_ID, TTU_U_ID, TTU_NOTIFY, TTU_COMMENT)
values (t_id, u_id, notify, comment);
}', tbn0, tbn1, tbn2,
tbn0, tbn1, tbn2, dbcol,
tbn0, tbn1, tbn2,
tbn0, tbn1, tbn2, dbcol,
tbn0, tbn1, tbn2, dbcol);
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
-- end XPATH search
declare pname varchar;
pname := sprintf ('"%I"."%I"."TT_QUERY_WORD_1_%I"', tbn0, tbn1, tbn2);
stmt := sprintf ('create procedure %s
(in tree any, inout best_w varchar, inout score integer, in topop integer, inout words any)
{
declare op integer;
if (isarray (tree))
{
op := aref (tree, 0);
if (op = 4 or op = 1210 or op = 1209)
{
declare inx int;
inx := 0;
while (inx < length (tree))
{
%s (aref (tree, inx), best_w, score, op, words);
inx := inx + 1;
}
}
else if (op = 1211)
{
%s (aref (tree, 2), best_w, score, op, words);
}
else if (op = 1)
{
declare ct int;
declare searched_word varchar;
searched_word := aref (tree, 2);
if (strchr (searched_word, ''*'') is not null)
return;
ct := "%I"."%I"."TT_WORD_FREQ_%I" (searched_word);
if (ct < score and topop <> 3)
{
score := ct;
best_w := searched_word;
}
else if (topop = 3)
best_w := searched_word;
}
else if (op = 3)
{
declare inx, sc1 int;
inx := 0;
while (inx < length (tree))
{
best_w := null;
sc1 := score;
score := 1000000000;
%s (aref (tree, inx), best_w, score, op, words);
if (words is null and best_w is not null)
words := vector (best_w);
else if (best_w is not null)
words := vector_concat (words, vector (best_w));
score := sc1;
best_w := null;
inx := inx + 1;
}
}
}
}', pname, pname, pname, tbn0, tbn1, tbn2, pname);
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
stmt := sprintf ('create procedure "%I"."%I"."TT_QUERY_WORD_%I" (in exp varchar, in is_xpath integer)
{
declare tree, ws1 any;
declare w varchar;
declare sc int;
sc := 1000000000;
w := ''__'';
ws1 := null;
if (is_xpath = 0)
tree := vt_parse (exp);
else
tree := exp;
%s (tree, w, sc, 0, ws1);
if (w is not null)
return vector (w);
else if (isarray (ws1))
return ws1;
return vector (''__'');
}', tbn0, tbn1, tbn2, pname);
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
stmt := sprintf ('create procedure "%I"."%I"."TT_NOTIFY_%I" () {
declare stat, msg, ntf, comment varchar;
declare _u_id, _ts, _d_id, _t_id, rc_call any;
for select distinct TTH_NOTIFY as _tt_notify from "%I"."%I"."%I_%I_HIT" where TTH_NOTIFY like ''%%@%%'' do
{
declare _message, _msg_tit varchar;
declare _cnt_hits integer;
declare _short_text varchar;
declare hits_data any;
_cnt_hits := 0;
_message := ''\\r\\nQuery/Hit Date/Document ID'';
hits_data := vector ();
for select TTH_U_ID, TTH_TS, TTH_D_ID, TTH_T_ID, TTH_NOTIFY
from "%I"."%I"."%I_%I_HIT" where TTH_NOTIFY = _tt_notify
order by TTH_TS
do
{
whenever not found goto nfq;
select coalesce (TT_COMMENT, TT_QUERY) into comment from
"%I"."%I"."%I_%I_QUERY" where TT_ID = TTH_T_ID;
nfq:
if (comment is null)
comment := ''*** no query ***'';
_cnt_hits := _cnt_hits + 1;
hits_data := vector_concat (hits_data, vector (vector (comment, TTH_TS, TTH_D_ID)));
_message := concat (_message, ''\\r\\n'', comment, ''/'',
substring (datestring (TTH_TS), 1, 19), ''/'',
cast (TTH_D_ID as varchar));
}
stat := ''00000'';
_msg_tit := concat (''Subject: Text trigger notification: New '',
cast (_cnt_hits as varchar) , '' hit(s) registered\\r\\n'');
_message := concat (_msg_tit, _message);
rc_call := 0;
if (__proc_exists (''%s.%s.%s_INFO_TEXT''))
{
rc_call := call (''%s.%s.%s_INFO_TEXT'') (_tt_notify, hits_data);
}
if (not rc_call)
{
exec (''smtp_send (null,?,?,?)'', stat, msg,
vector (_tt_notify, _tt_notify, _message));
}
update "%I"."%I"."%I_%I_HIT" set TTH_NOTIFY = '''' where TTH_NOTIFY = _tt_notify;
}
return;
}',
tbn0, tbn1, tbn2,
tbn0, tbn1, tbn2, dbcol,
tbn0, tbn1, tbn2, dbcol,
tbn0, tbn1, tbn2, dbcol,
tbn0, tbn1, tbn2,
tbn0, tbn1, tbn2,
tbn0, tbn1, tbn2, dbcol);
--dbg_obj_print (stmt);
if (DB.DBA.execstmt (stmt, stat, msg))
goto err;
insert into DB.DBA.SYS_SCHEDULED_EVENT (SE_NAME, SE_START, SE_SQL, SE_INTERVAL)
values (sprintf ('Notification for text hits on "%s.%s.%s"', tbn0, tbn1, tbn2), now (), sprintf ('"%I"."%I"."TT_NOTIFY_%I"()', tbn0, tbn1, tbn2), 10);
return 0;
err:
if (stat <> '42S01' and verr <> 'FT035' and verr <> 'FTT036' and verr <> 'FT037')
DB.DBA.vt_drop_ftt (tb, dbcol);
if (is_intr <> 2 and verr <> '')
{
signal (stat, msg, verr);
}
else if (is_intr <> 2 and verr = '')
{
signal (stat, msg);
}
}
;
create procedure DB.DBA.vt_drop_ftt (in tb varchar, in dbcol varchar)
{
declare stmt, stat, msg varchar;
declare tbn0, tbn1, tbn2 varchar;
-- tb := complete_table_name (fix_identifier_case (tb), 1);
tb := complete_table_name ((tb), 1);
tbn0 := name_part (tb, 0);
tbn1 := name_part (tb, 1);
tbn2 := name_part (tb, 2);
if (not exists (select 1 from DB.DBA.SYS_VT_INDEX where 0 = casemode_strcmp (VI_TABLE, tb)))
signal ('42S02', sprintf ('Text index not defined for "%s"', tb), 'FT034');
if (not isstring (dbcol))
select VI_COL into dbcol from DB.DBA.SYS_VT_INDEX where 0 = casemode_strcmp (VI_TABLE, tb);
stmt := sprintf ('DROP TRIGGER "%I"."%I"."%I_FTT_D"', tbn0, tbn1, tbn2);
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP PROCEDURE "%I"."%I"."VT_HITS_%I"' , tbn0, tbn1, tbn2);
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP PROCEDURE "%I"."%I"."TT_WORD_FREQ_%I"', tbn0, tbn1, tbn2);
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP PROCEDURE "%I"."%I"."TT_QUERY_%I"', tbn0, tbn1, tbn2);
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP PROCEDURE "%I"."%I"."TT_XPATH_QUERY_%I"', tbn0, tbn1, tbn2);
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP PROCEDURE "%I"."%I"."TT_QUERY_WORD_1_%I"', tbn0, tbn1, tbn2);
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP PROCEDURE "%I"."%I"."TT_QUERY_WORD_%I"',tbn0, tbn1, tbn2);
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP PROCEDURE "%I"."%I"."TT_NOTIFY_%I"',tbn0, tbn1, tbn2);
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP TABLE "%I"."%I"."%I"', tbn0, tbn1, concat (tbn2, '_', dbcol,'_QUERY'));
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP TABLE "%I"."%I"."%I"', tbn0, tbn1, concat (tbn2, '_', dbcol, '_USER'));
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('DROP TABLE "%I"."%I"."%I"', tbn0, tbn1, concat (tbn2, '_', dbcol, '_HIT'));
-- make an empty procedure
DB.DBA.execstmt (stmt, stat, msg);
stmt := sprintf ('create procedure "%I"."%I"."VT_HITS_%I" (inout vtb any, inout strs any)
{ return; }', tbn0, tbn1, tbn2 );
DB.DBA.execstmt (stmt, stat, msg);
delete from DB.DBA.SYS_SCHEDULED_EVENT where SE_NAME = sprintf ('Notification for text hits on "%s.%s.%s"', tbn0, tbn1, tbn2);
return;
}
;
--#IF VER=5
--!AFTER
--#ENDIF
grant execute on DB.DBA.vt_create_text_index to public
;
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